8723949 has 12 divisors (see below), whose sum is σ = 12596256. Its totient is φ = 5368272.

The previous prime is 8723947. The next prime is 8723951. The reversal of 8723949 is 9493278.

It is an interprime number because it is at equal distance from previous prime (8723947) and next prime (8723951).

It is not a de Polignac number, because 8723949 - 2¹ = 8723947 is a prime.

It is a super-2 number, since 2×8723949² = 152214572309202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8723949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8723947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8097 + ... + 9110.

It is an arithmetic number, because the mean of its divisors is an integer number (1049688).

Almost surely, 2^8723949 is an apocalyptic number.

It is an amenable number.

8723949 is a deficient number, since it is larger than the sum of its proper divisors (3872307).

8723949 is a wasteful number, since it uses less digits than its factorization.

8723949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17236 (or 17223 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 8723949 is about 2953.6331864333. The cubic root of 8723949 is about 205.8595596007.

The spelling of 8723949 in words is "eight million, seven hundred twenty-three thousand, nine hundred forty-nine".